Question

Matemática
${x} - 2 \leqslant x\leqslant \frac{1}{4}$

Answer 1

x - 2 ≤ x ≤ 1/4 (*4)
4x - 8 ≤ 4x ≤ 1
4x - 8 - 4x ≤ 4x - 4x ≤ 1 - 4x
-8 ≤ 0 ≤ 1 - 4x
-9 ≤ -1 ≤ - 4x
-9/4 ≤ -1/4 ≤ - 4x/4 (/4)
-9/4 ≤ -1/4 ≤ -x (*-1)
9/4 ≥ 1/4 ≥ x

Suponho que seja assim.